Horseshoe-nail.



A. W. KNIGHT.

HORSESHOE NAIL.

AFPLICATIQN FILED NOV. 18, 1916.

1 '?@,544n Patented Aug. 20, 1918.

Jaye/2202."

ALFRED WILLIAM KNIGHT, OF LONDON, ENGLAND.

HORSESI-IOE-NAIL.

1,276,5eid.

Specification of Letters Patent.

Patented Aug. 20, 1918.

Application filed November 18, 1916. Serial No. 132,032.

T 0 all whom it may concern Be it known that I, ALFRED KNIGHT, a subject of the King of Great Britain, residing at 4 Upper St. Martlns Lane, Strand, in the county of London, England, master farrier, have invented new and useful Improvements in l-Iorseshoe-llails, of which the following is a specification.

My invention relates to horse-shoe nails of the kind described in the specification of former Letters Patent granted to me No. lldlQiS. In my former specification 1 described a nail provided with ataper head or countersink of less depth than the countersunk holes in the shoe, such head, on the part adjacent to the inner face, being prolonged to form an extension by means of which the nail was driven.

Heretofore the lateral edges of this extension were inclined to form continuations of the inclined side faces of the countersink .of the head, with the result that such extension, by binding on the inclined sides or against the top of the countersin; nole, prevented the head from swaying over inwardly.

The object of my invention is to construct a nail which will allow of the inward swaying of the head with perfect freedom, for the purpose of removing any inward pressure by the shank upon the soft part of the foot and transferring such pressure to the outer wall of the hoof away from the sensitive nerves.

According to my invention the countersink of the head is of less depth than the hole into which it is to be driven, as hereinbefore referred to, but the extension upon the head is provided with a double incline or bitaper, diminishing toward the top, upon which the hammer blows are delivered, the formation of the double inclines in this manner serving to prevent the extension of the head from binding against the top of the hole, as was the case with the nail previously referred to.

Furthermore, I form the inside of the extension of the head and the adjacent surface of the head itself in alinemcut with the flat portion of the shank that, when the nail is driven, there will be an inward swaying of the head which will tend to press the shank toward the outside of the hoof.

My invention will be readily understood by reference to the accompanying drawing, in which Figure 1 is an outside view of the nail.

lVILLLur F 2 an edge view; and

F g. 3 an lnside vlew.

Fig. 4 1s a plan view of the head of the 112111.

I; 1g. 5 1s a section on the line 55, Fig. 1; ant

Ifig. 6 is a sectional view indicating the action of the head to prevent the inward pressure.

a indicates the'head of the nail which is of less length than the hole into which the nail is to be driven, and this head has an upwardly and outwardly inclined front face h, upwardly and outwardly inclined lateral edges (4, and a flat rear face a The head is provided with an extension I) having upwardly and inwardly inclined lateral edges 0 and flat rear and front faces 0, 7, which are parallel with each other. The rear face 6 of the extension 6 and also the rear face a of the head of the nail are in alinement or flush with the flat rear face 9 of the shank, as shown in Fig. 2.

The horse shoe is provided with the ordinary tapered holes, one of which is shown in Fig. 6 the front inclined wall of the hole being designated 2' and the rear wall being designated 2".

By making the rear faces of the head and extension in the same plane as the rear face 9 of the shank it will be understood that if, as the nail is driven, the outside face it of the head is not exactly parallel with the outside face i of the hole in the shoe as the nail is bedded in the hole, the said face it, as it comes into contact with the face 2', will tend to throw the head rearward toward the wall 2' and the shank of the nail forward, as indicated to an exaggerated extent by the dotted lines in Fig. 6, so that the shank will be thrown toward the surface of the hoof and will not bear upon the sensitive nerves of the foot. By making the head a of less depth than the hole and forming the exten-= sion 6 thereon it will be understood that the deformation of the head, under the hammer blows, is not likely to take place and so cannot interfere with the proper bedding of the nail in the hole.

7: is a groove which I advantageously form in the outer face of the nail adjacent to the head and which has square angles, as clearly shown in Fig. 5, the said groove gradually decreasing in depth from the head toward the center of the nail as shown in Fig. 2.

iii;

brim

Z is the groove which E form on the inside lower part of the shank, in a Well known manner.

As the nail is driven into the hoof, the edges of the Walls of the groove 70 will cut the same and the out portion will enter the groove and afford a lateral support to the nail While being driven. After the nail is driven, the material of the hoof which has entered the groove will act to lock the nail to the hoof and prevent the same flOHl loose; Tfhen it is 0- red to Withdraw the nail, the material of the hoof which rests in the groove will slide along the incline of the same and the nail 1, av he Witlnlraivn without breaking.

in the manufacture of the nails the grooves 7.; and Zniav he formed by dies which grip the Wire during the upsetting or jumping-up of the heads.

ln practice the extremity of the extension Z), upon Which the hannner lJlO'WS are delivcred, is made of the same area as the Wire from which the nails are formed, so that the Waste of metal between adjacent nails is reduced to a minimum.

Claims:

1. The combination With a horse shoe having a nail hole provided. with an inclined. front and rear wall, of a horse shoe nail provided with an inclined front face arranged at an angle to the front face of the nail shank and flat rear face flush "with the rear surface of said shank, the inclined front face of the nail head engaging the front wall of the nail hole when the nail is driven for tnrowing the head tovvard the rear and the shank toward the surface of the hoof.

2. The combination with having" a nail hole provided with an inclined front and rear Wall, of horse shoe nail having a head of less length than the nail hole and provided with an inclined front face arranged at an angle to the front face of the nail shank, and a iiat rear face flush with the rear surface of the shank, and an extension provided on said head having inclined lateral edges diminishing toward the top, the inclined front face of tne head en gaging the front Wall of the nail hole, when the nail is driven, for forcing the head toward the rear and the shank toward the horse shoe nail having a shank proi' with a groove having square angles, the said groove being deepestat the end adjac rt to the nail head and merging at enc on to the surface of the shank. 1 horseshoe nail, shank, a taper head or countersink of a depth less than that t e hole designed to receive the said head, :ctension upon the head having inclined edges, diminishing toward the top, a flat parallel faces, the inside face of the extension and the adjacent face of the taper head of counter k being in alineinent with the fiat adjacent portion of the shank, a groove in the outer face of the shank having square angles, the said groove being deepest at the end adjacent to the taper head and merging at the other end on to the surface of the nail, and a groove formed on the inside surface of the shank, substantially as described Iii CJi 

